Table 1 Basic and obstetric charactersitcs of SSI and control groups
Variable | SSI group (n = 828) | Control group (n = 1500) | P. V (Sig.) | Crude Odds ratio (95% CI) |
|---|---|---|---|---|
Age (mean ± SD) | 31.20 ± 4.90 | 30.90 ± 4.80 | 0.15NS | – |
  < 19 | 95% CI (30.9–31.5) 87 (10.50%) | 95% CI (30.7–31.1) 141 (9.40%) | 0.54NS | 1.12 (0.84–1.49) |
 20–34 | 678 (81.90%) | 1231 (82.00%) |  | 1.0 |
  ≥ 35 | 63 (7.60%) | 128 (8.60%) |  | 0.89 (0.65–1.23) |
Residence | ||||
 Urban | 361 (43.60%) | 676 (45.10%) | 0.50NS | 1.0 |
 Rural | 467 (56.40%) | 824 (54.90%) |  | 1.06 (0.89–1.26) |
Parity | ||||
 1–4 | 716 (86.50%) | 1372 (91.50%) | ≤ 0.001 | 1.0 |
  >  4 | 112 (13.50%) | 128 (8.50%) |  | 1.68 (1.28–2.19) |
Gestational age | ||||
  <  37 wks. | 139 (16.80%) | 172 (11.40%) | ≤ 0.001 | 1.56 (1.22–1.98) |
  ≥ 37 wks. | 689 (83.20%) | 1328 (88.60%) |  | 1.0 |
Type of the CS | ||||
 Elective | 156 (18.80%) | 536 (35.70%) | ≤ 0.001 | 1.0 |
 Emergency | 672 (81.20%) | 964 (64.30%) |  | 2.40 (1.95–2.94) |
Duration of CS | ||||
  ≤ 1 h | 112 (13.50%) | 421 (28.10%) | ≤ 0.001 | 1.0 |
  >  1 h | 716 (86.50%) | 1079 (71.90%) |  | 2.49 (1.98–3.14) |
Bleeding (> 1000 ml) | ||||
No | 739 (89.30%) | 1433 (95.50%) | ≤ 0.001 | 1.0 |
Yes | 89 (10.70%) | 67 (4.50%) |  | 2.58 (1.85–3.58) |
Labour Duration | ||||
  < 24 h | 719 (86.80%) | 1382 (92.10%) | ≤ 0.001 | 1.0 |
  ≥ 24 h | 109 (13.20%) | 118 (7.90%) |  | 1.78 (1.35–2.34) |
Chorioamnionitis | ||||
 No | 689 (83.20%) | 1446 (96.40%) | ≤ 0.001 | 1.0 |
 Yes | 139 (16.80%) | 54 (3.60%) |  | 5.40 (3.89–7.49) |
PROM | ||||
 No | 467 (56.40%) | 1297 (86.50%) | ≤ 0.001 | 1.0 |
 Yes | 361 (43.60%) | 203 (13.50%) |  | 4.93 (4.03–6.04) |
ANC visits | ||||
 No | 271 (32.70%) | 296 (19.70%) | ≤ 0.001 | 2.33 (1.86–2.91) |
 1–4 | 319 (38.50%) | 599 (39.90%) | 0.003 | 1.35 (1.11–1.66) |
  >  4 | 238 (28.80%) | 605 (40.40%) |  | 1.0 |
Obesity | ||||
 No | 692 (83.60%) | 1342 (89.50%) | ≤ 0.001 | 1.0 |
 Yes | 136 (16.40%) | 158 (10.50%) |  | 1.67 (1.30–2.14) |
Diabetes Mellitus | ||||
 No | 745 (90.00%) | 1414 (94.30%) | ≤ 0.001 | 1.0 |
 Yes | 83 (10.00%) | 86 (5.70%) |  | 1.83 (1.34–2.51) |
Hypertension | ||||
 No | 787 (95.00%) | 1455 (97.00%) | 0.016 | 1.0 |
 Yes | 41 (5.00%) | 45 (3.00%) |  | 1.68 (1.09–2.59) |